Read multiple files and save data into one dataframe in R - r

Question

I am trying to read multiple files and then combine them into one data frame. The code that I am using is as follows:
library(plyr)
mydata = ldply(list.files(path="Data load for stations/data/Predicted",pattern = "txt"), function(filename) {
dum = read.table(filename,skip=5, header=F, sep=" ")
#If you want to add the filename as well on the column
dum$filename = filename
return(dum)
})
The error that I am getting is as follows:
Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") :
cannot open file 'mobdata201001.txt': No such file or directory
The data files can be found on https://www.dropbox.com/sh/827kmkrwd0irehk/BFbftkks42
Any help is highly appreciated.

Answer 1

Alternatively you can use argument full.names in list.files:
list.files(path="Data load for stations/data/Predicted",
pattern = "txt", full.names=TRUE)
It will add automatically the full path before the file name.

Answer 2

Try the following code:
library(plyr)
path <- "Data load for stations/data/Predicted/"
filenames <- paste0(path, list.files(path, pattern = "txt"))
mydata = ldply(filenames, function(filename) {
dum = read.table(filename,skip=5, header=F, sep=" ")
#If you want to add the filename as well on the column
dum$filename = filename
return(dum)
})
I think what is happening is you're generating a list of files relative to the path in list.files, and then asking read.table to take the filename without the rest of the path...